衍射波的特性:不同楔形和材料的比较研究

Jiro Iwashige, L. Barolli, Yuki Isayama, Ryo Nagao, Katsuki Hayashi
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引用次数: 4

摘要

为了有效地利用无线电波资源,对无线电波在城市中的传播路径进行估计是十分重要的。在我们以前的工作中,我们已经通过在水平面上具有任意角度的两条边来检查衍射场。本文分析了一个或两个楔形的衍射场,比较了楔形形状和材料对水平偏振入射和垂直偏振入射衍射场的影响。对由不同内角和不同材料组成的一楔和两楔进行了数值计算。我们还讨论了建筑屋顶的衍射场,并考虑了在建筑屋顶两侧增加护墙的影响。数值结果表明,对于一个或两个楔形,楔形形状、材料和入射偏振对衍射场的影响不显著,但建筑物屋顶的衍射场受材料和入射波偏振的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Characteristics of Diffracted Waves: A Comparison Study for Different Wedge Shapes and Materials
In order to have an effective utilization of the radio wave resources, it is important to estimate propagation path in the urban area. In our previous work, we have examined the diffracted fields by two edges with an arbitrary angle in a horizontal plane. In this paper, we analyze the diffracted fields by one or two wedges and compare the effects that wedge shapes and materials give to the diffracted fields for horizontal and vertical polarized incidence. The numerical calculations are carried out for a wedge and two wedges, which are composed by various inner angles and different materials. We also discuss about the diffracted fields by a building rooftop and consider the effect of parapets added on the both sides of the building rooftop. The numerical results show that for one or two wedges, wedge shapes, materials and incident polarization don't give significant effect to diffracted fields, but the diffracted fields by a building rooftop are changed by the material and incident wave polarization.
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